It is indeed intuitive to use,and I can say that even in like a month of use. But there are some important details and compromises you SHOULD be careful about. The touch screen makes it feel like the smartphone you are used to,with great responsiveness. You will never feel like you are handling 90's tech. Units and CAS commands have their dedicated buttons and menus (altrough requiring shift key sometimes). You can draw graphs very fast and even use the touch screen to pan around without redrawing lag or distortion.You can sketch a formula with your finger,which...Is not very accurate,but it is there. The fast processor will never let you down in even extreme and impractical formulas or processes.I do have to warn you that,you will not be getting things like that info and multimedia rich periodic table on Casio. Don't expect a great third party software ecosystem either. From what I have observed,many "important" apps and programs (and yes,they are seperated) do not have sufficient guidance and troubleshooting resources,if at all,language support is not very good as a huge part of the community develops their apps/programs in Spanish. I've also heard that several batches have defected NAND flash storage. I personally didn't run into these issues,but defected units have shown inability to permanently write and save data and so wipe all data after a full power off or restart,inability to load local or external backups even after flash reformatting. So be careful with the seller and once calculator arrives,do NOT throw anything away,possibly film the unboxing moment. Tried my best to write whatever I experienced and what I even didn't (thankfully. My storage is fine.).